Linkage control method and device for ancillary facilities of ground main ventilator

Abstract

The invention discloses a linkage control method and device for subsidiary facilities of a ground main ventilator, and belongs to the technical field of coal mine ventilation. The invention provides an automatic linkage control scheme based on a preset process aiming at the problems that an existing fan accessory device depends on manual operation and lacks opening and air leakage monitoring and linkage control capability. After the system receives an adjusting instruction of a main ventilator, firstly, auxiliary facilities such as a remote control butterfly valve, an air window, a vertical gate and an anti-explosion door locking mechanism are subjected to self-inspection, including online state, opening degree and pressure difference of two ends of equipment; then, actions are automatically executed according to the process, and execution results are fed back in real time; and if abnormity occurs, alarming and stopping the process. Intelligent judgment of execution conditions and in-place states is achieved by establishing a quantitative relation model of subsidiary facility pressure differences and fan operation states under different working conditions. The automation, the reliability and the disaster prevention and reduction capability of the mine ventilation system are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal mine ventilation, in particular to a ground main fan auxiliary facility linkage control method and device. BACKGROUND

[0002] With the extension of the operation life of hydropower stations, their ultrasonic flow monitoring systems generally face multiple challenges such as equipment aging, centralized architecture, outdated software, and lack of domestic substitution.

[0003] As an important means of hydropower plant operation monitoring and energy efficiency evaluation, ultrasonic flow measurement is widely used in real-time analysis of unit flow, efficiency and water consumption rate. In related technologies, a centralized flow monitoring system is usually constructed through the cooperative work of industrial control host, transducer array and communication network. Specifically, the system covers the whole process from signal transmission, propagation time measurement, data processing to efficiency calculation, including key links such as sound path configuration, signal conditioning, time difference analysis and parameter fusion. However, in the existing ultrasonic flow monitoring system, the centralized industrial control architecture and hardware devices of discontinued models are directly used, and distributed deployment and domestic substitution are not realized, which may cause problems such as single point failure risk, difficulty in spare parts procurement, long system maintenance period, or data security and limited function expansion due to the stop of operating system support, thereby affecting the operation stability, energy efficiency optimization capability and intelligent upgrading process of hydropower plants. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, the first object of the present application is to propose a ground main fan auxiliary facility linkage control method.

[0006] Another object of the present application is to propose a ground main fan auxiliary facility linkage control device.

[0007] The third object of the present application is to propose a computer device.

[0008] The fourth object of the present application is to propose a non-transitory computer readable storage medium.

[0009] To achieve the above objects, the first aspect of the present application proposes a ground main fan auxiliary facility linkage control method, comprising: S1, receiving the operating condition adjustment requirement of the ground main fan and starting the preset fan auxiliary device linkage process; S2, based on the control substation, detecting the online state, opening degree and pressure difference between facilities of the fan auxiliary device, verifying whether the device meets the linkage condition; S3, the control fan accessory device executes action according to preset procedure, and real-time monitoring differential pressure change in execution process verifies action to place nature; S4, the action execution result and abnormal state are fed back to the upper computer, and according to the abnormal type, alarm, process interruption or specific fault reason prompting are triggered.

[0010] In an embodiment of the application, the S1 comprises: S11, the preset linkage procedure comprises non-stop wind reversing process, and the specific steps are as follows: 1# horizontal air door is closed, 1# gate air door is opened, 2# horizontal air door is opened, and 2# gate air door is opened when 1# fan is normally operated; after 2# fan is started, 1# horizontal air door is opened, 1# gate air door is closed, and 2# horizontal air door is closed; after 1# gate air door is closed to place, 1# horizontal air door is opened to place and 2# horizontal air door is closed to place, 1# fan is closed.

[0011] In an embodiment of the application, the S2 comprises: S21, the online state of the substation detection equipment is detected by control, and the online state is verified by using the communication protocol of the substation and the equipment; S22, differential pressure data of the facility two ends are collected by using a sensor, and whether the facility opening degree meets the linkage condition is verified by formula .

[0012] In an embodiment of the application, the S3 comprises: S31, the transmission mechanism execution action comprises push-pull type transmission mechanism and rotary type transmission mechanism; S32, when real-time monitoring differential pressure change in execution process is carried out, formula is used to verify linkage to place nature during normal operation of 2# fan.

[0013] In an embodiment of the application, the S4 comprises: S41, when the equipment is detected to be offline, prompt information is outputted and the linkage control procedure is interrupted; S42, when the equipment opening degree is detected to be not in conformity with the requirement, it is prompted that the equipment is stuck or the sensor position is abnormal, and fault code is recorded.

[0014] To achieve the above purpose, a second aspect embodiment of the application provides a linkage control device for ground main fan accessory facility, comprising: A linkage procedure starting module is used for receiving ground main fan working condition regulation demand and starting preset fan accessory device linkage procedure; A linkage condition verification module is used for detecting online state, opening degree and facility two end differential pressure of the fan accessory device based on control substation, and verifying whether the device meets the linkage condition; An execution monitoring module is configured to control the fan accessory device to perform an action according to a preset procedure, and to monitor the differential pressure change in real time during the execution process to verify the action completion. An abnormal feedback processing module is configured to feed back the action execution result and the abnormal state to the upper computer, and to trigger an alarm, a procedure interruption or a specific fault reason according to the abnormal type.

[0015] The ground main fan accessory device linkage control method and device according to the embodiment of the application realize the automatic linkage control and execution state verification of the ground main fan accessory device, and improve the response speed and reliability of the mine ventilation system under the equipment switching and disaster conditions.

[0016] To achieve the above object, the third aspect of the application provides a computer device, which comprises a processor and a memory; wherein the processor runs a program corresponding to an executable program code stored in the memory by reading the executable program code, so as to realize the ground main fan accessory device linkage control method according to the first aspect of the application.

[0017] To achieve the above object, the fourth aspect of the application provides a non-temporary computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the ground main fan accessory device linkage control method according to the first aspect of the application.

[0018] Additional aspects and advantages of the application will be described in part in the description that follows, and will become apparent from the description that follows, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a flowchart of a ground main fan accessory device linkage control method according to an embodiment of the application; Figure 2 FIG. 2 is a linkage control method diagram of a fan accessory device according to an embodiment of the application; Figure 3 FIG. 3 is a schematic diagram of a main fan one-key switching according to an embodiment of the application; Figure 4 FIG. 4 is a principle realization diagram of a main fan one-key switching according to an embodiment of the application; Figure 5 FIG. 5 is an installation position diagram of a fan accessory device according to an embodiment of the application; Figure 6 FIG. 6 is a structural diagram of a ground main fan accessory device linkage control device according to an embodiment of the application; Figure 7 FIG. 7 is a computer device according to an embodiment of the application. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in the case of no conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0022] A ground main ventilator auxiliary facility linkage control method and device according to an embodiment of the present application will be described below with reference to the drawings.

[0023] Embodiment 1 Figure 1 A flow chart of a ground main ventilator auxiliary facility linkage control method according to an embodiment of the present application is shown as follows, Figure 1 including: S1, receiving a ground main ventilator working condition adjustment requirement and starting a preset ventilator auxiliary device linkage process.

[0024] Specifically, in some implementations, the step of "receiving a ground main ventilator working condition adjustment requirement and starting a preset ventilator auxiliary device linkage process" of the present application receives an adjustment instruction from a mine ventilation dispatch center or an automation platform through an intelligent control system, such as "non-stop wind reversing machine", "one-key reverse wind" or "disaster explosion-proof door opening" operation requirements. The control system automatically identifies the current main ventilator running state (such as 1# fan or 2# fan) according to the preset linkage control logic, and calls the corresponding preset execution process, so as to realize the coordinated action of the ventilator auxiliary device.

[0025] Further, this step relies on PLC (Programmable Logic Controller) or DCS (Distributed Control System) as the control center, and performs data interaction with the control substation of each ventilator auxiliary device through RS485, CAN bus or industrial Ethernet communication protocol. The control substation is responsible for collecting online state, opening degree information and pressure difference data, and uploading these information to the upper computer system in real time. When receiving the adjustment instruction, the system first verifies whether the current working condition meets the preset conditions, such as fan running state, damper opening and closing state, pressure difference threshold, etc. If the conditions are met, the system issues an action instruction to the related control substation, and starts the linkage process of the ventilator auxiliary device.

[0026] Further, the system needs to make a judgment according to the preset pressure difference model. For example, during the normal operation of 1# fan, it needs to meet The differential pressure relationship is used to ensure that the auxiliary device has execution conditions. In addition, the system also needs to set the judgment threshold of the online state of the equipment (such as judging that the line is disconnected when the communication interruption is more than 5 seconds) and the accuracy requirement of the opening degree feedback (such as ±1° or ±5% opening degree error).

[0027] Further, this step is widely used in intelligent control of mine ventilation systems, especially in key working conditions such as main fan switching, reverse ventilation operation or emergency response to underground disasters. For example, during the process of switching the fan without stopping the wind, the system needs to close the 1# air door and open the 2# air door under the running state of the 1# fan, and then start the 2# fan, to ensure the continuous operation of the ventilation system and avoid the interruption of underground ventilation caused by switching.

[0028] Further, through the standardized instruction receiving and process starting mechanism, the automatic and intelligent linkage control of the fan auxiliary device is realized, which significantly improves the response speed and execution accuracy of the mine ventilation system, lays a foundation for the subsequent self-checking, execution and feedback links, and enhances the safety and stability of the mine ventilation system.

[0029] Further, S1 includes: S11, the preset linkage process includes a fan switching process without stopping the wind, and the specific steps are: when the 1# fan is normally running, the 1# horizontal air door is closed, the 1# gate air door is opened, the 2# horizontal air door is opened, and the 2# gate air door is opened; after the 2# fan is started, the 1# horizontal air door is opened, the 1# gate air door is closed, and the 2# horizontal air door is closed; after the 1# gate air door is closed, the 1# horizontal air door is opened, and the 2# horizontal air door is closed, the 1# fan is closed.

[0030] Specifically, in some implementations, the "fan switching process without stopping the wind" in the preset linkage process accurately controls the opening and closing state of the fan auxiliary device to ensure that the ventilation system is always in an effective running state during the switching process from the 1# fan to the 2# fan, thereby avoiding ventilation interruption caused by fan switching and ensuring mine safety.

[0031] Further, under the normal running state of the 1# fan, the 1# horizontal air door is first ensured to be in a closed state to prevent wind flow short circuiting; at the same time, the 1# gate air door is kept open to maintain the ventilation capacity of the main air duct. At the same time, the 2# horizontal air door and the 2# gate air door are both in an open state to provide a channel for the start and takeover of the 2# fan. After the 2# fan is started, the system gradually adjusts the air door state: the 1# horizontal air door is opened, the 1# gate air door is closed, and the 2# horizontal air door is closed. Through this series of actions, smooth switching of the wind flow channel is realized, ensuring stable transition of the air volume.

[0032] Further, the key parameters involved in this process include the opening and closing state signals of the dampers, the running state signals of the fans, and the feedback signals of the damper action reaching the position. For example, the 1# gate damper closing to position signal needs to be confirmed after the 2# horizontal damper closing to position, to ensure the integrity of the air flow path. The opening and closing action of the damper needs to meet certain response time requirements, usually completed within 5-10 seconds, to ensure the efficiency of the switching process. In addition, the opening detection accuracy of the damper should reach ±1°, to ensure that its position meets the control logic requirements.

[0033] Further, this process is suitable for the non-stop switching operation of the main fan in the mine ventilation system, especially when the fan needs to be switched quickly to deal with sudden conditions (such as equipment failure, power interruption, etc.), which can effectively maintain the stability of the underground ventilation system. This process realizes real-time monitoring and control of the damper state through the cooperation of remote control substation and sensors, which meets the requirements of the "Coal Mine Safety Regulations" on the continuity and safety of the ventilation system.

[0034] Further, this step ensures that the air flow path is always unobstructed during the fan switching process, avoiding the problems of air flow stagnation or reverse flow that may occur in traditional manual switching methods. At the same time, combined with the damper pressure difference monitoring model (such as , the system can determine whether the damper has reached the position, thereby improving the reliability and intelligent level of the linkage control. This step plays a role in the overall control method, providing a safe and controllable air flow path switching basis for the subsequent fan shutdown and startup.

[0035] S2, based on the control substation, the online state detection, opening detection and facility pressure difference detection of the fan accessories are carried out to verify whether the device meets the linkage conditions.

[0036] Specifically, this step involves online state detection, opening detection and facility pressure difference detection of the fan accessories, which aims to verify whether the device has the execution conditions of linkage control. In some implementations, this step works with the distributed sensor network through the control substation, realizing real-time monitoring and state evaluation of key components such as the fan chamber gate damper, skylight, and explosion-proof door locking device.

[0037] Further, the control substation as a local control unit interacts with the actuators and sensors of each accessory device through RS485, CAN bus or wireless communication modules (such as LoRa, ZigBee) for data exchange. Online status detection mainly determines whether the device is in normal working state through heartbeat mechanism or communication link state, for example, by setting a communication timeout threshold (such as 30 seconds without receiving a feedback signal, it is determined as offline). The opening degree detection relies on angle sensor or displacement sensor, and its accuracy is usually required to be within ±1° or ±2mm to ensure the accuracy of device position feedback. The differential pressure detection at both ends of the facility is collected by differential pressure sensor, and its range is generally 0-2000Pa, the accuracy is ±2%FS, and the sampling frequency is not less than 1Hz to meet the real-time response requirement under dynamic working condition.

[0038] Further, the differential pressure detection result needs to be compared with the preset quantization relationship model. For example, during the normal operation of the 1# fan, the pressure difference inside and outside the air shaft explosion-proof door should be significantly smaller than the pressure difference before and after the remote-controlled gate valve and , and the pressure difference inside and outside the skylight and the pressure difference before and after the butterfly valve , should be close to zero to ensure the correct configuration of the air flow path. These differential pressure relationship models provide key basis for linkage control.

[0039] Further, this step is widely used in the scenes of not stopping the main fan, one-key reversing the fan and disaster ventilation in the coal mine ventilation system. For example, during the process of not stopping the fan, the system needs to confirm whether the 1# gate valve is completely closed and the 2# gate valve is completely opened to ensure the correct switching of the air flow channel. If it is detected that a device does not meet the linkage condition, the system will trigger the alarm mechanism and suspend the subsequent process to prevent the ventilation system from failing due to device abnormalities.

[0040] Further, through multi-dimensional state verification, it is ensured that the fan accessory device is in an operable state before executing linkage control, thereby improving the reliability and safety of system control. At the same time, the differential pressure detection provides a quantitative basis for the device to be in place, which helps to realize the closed-loop control and fault self-diagnosis function, and significantly improves the intelligent level of the mine ventilation system.

[0041] Further, S2 comprises: S21, detecting the online state of the device through the control substation, specifically using the communication protocol of the substation and the device to verify the online state.

[0042] Specifically, in some implementations, by controlling the technical steps of detecting the online state of the substation, the connection state between the substation and the fan accessory device is verified in real time using a communication protocol, so as to ensure that the system has complete equipment response capability when performing linkage control. The technical implementation of this step is based on the industrial field bus communication protocol. Through periodic polling or interrupt response mechanism, the control substation sends state query instructions to each fan accessory device and receives its response signal to determine whether the equipment is in online state.

[0043] Further, the control substation sends heartbeat packets or state request frames to devices such as remote control butterfly valves, remote control air windows, remote vertical gate valves and explosion-proof door locking mechanisms according to the preset communication period. After receiving the instructions, if the device is in normal working state, it will return a response frame containing device ID, communication state flag and current running parameters. If no response is received within the set timeout time, or the response frame contains an error code, it is determined that the device is in offline state, and the corresponding alarm mechanism is triggered.

[0044] Further, the communication protocol needs to support CRC check, frame format check and retransmission mechanism to ensure the reliability of data transmission. The communication baud rate is usually set to 9600bps or 19200bps, the data bit is 8 bits, the stop bit is 1 bit, and the check mode is even check or no check. The specific adjustment is made according to the type of field device and the communication distance. In addition, the determination threshold of the online state of the device can be set to 3 times of non-response in a row to determine offline, so as to avoid misjudgment caused by transient communication interference.

[0045] Further, this step is widely used in the automation control platform of mine ventilation system in practical application, especially before performing key operations such as non-stop wind reversing machine and one-key reverse wind, to ensure that all the accessory devices participating in linkage are in communicable and controllable state. Through this mechanism, the system can identify device failure or communication anomaly in advance, so as to avoid control failure or safety risk caused by device disconnection.

[0046] Further, this step effectively improves the real-time perception ability of the system to the state of the device, and provides a reliable precondition for subsequent opening detection and differential pressure analysis. Combined with the differential pressure model mentioned in the technical disclosure, accurate detection of the online state of the device helps to determine whether the fan accessory device has been executed according to the preset process, so as to realize the collaborative optimization of closed-loop control and intelligent decision.

[0047] S22, collecting differential pressure data at both ends of the facility by using a sensor, and verifying whether the opening of the facility meets the linkage condition by formula

[0048] ​Specifically, in some implementations, the application collects differential pressure data of the fan auxiliary facilities at both ends through sensors, and verifies whether the facility opening degree meets the linkage control condition based on the preset differential pressure relationship model, so as to ensure that the main fan can realize precise and efficient linkage control under switching or catastrophic conditions. This step is based on the principles of fluid mechanics and dynamic response of ventilation system.

[0049] Further, the collection of differential pressure data relies on high-precision pressure sensors arranged at the front and rear ends of the facilities. The sensor type can be selected as a differential pressure pressure transmitter, the range is usually set to 0~2500Pa, the accuracy level is not less than 0.5 level, and the sampling frequency is 1~10Hz to ensure the response ability to transient differential pressure changes. The collected differential pressure data is processed in real time through an industrial control substation and compared with the preset differential pressure relationship model. For example, when 1# fan is running, if the collected differential pressure meets the formula , it indicates that the opening degree state of the auxiliary facilities (such as dampers, skylights, etc.) corresponding to 1# fan meets the linkage condition, and the system can continue to execute the subsequent actions.

[0050] Further, in the formula represents the pressure difference inside and outside the remote control skylight, represents the pressure difference before and after the remote control gate, represents the pressure difference inside and outside the air shaft explosion-proof door. In the normal running state, and should have a significant pressure difference, and the two are equal, indicating that the airflow path is unobstructed and the facility opening degree meets the linkage requirements; while should be much smaller than the above-mentioned pressure difference, so as to ensure that the explosion-proof door is in a closed state to prevent air leakage.

[0051] Further, this step is widely used in the scenes of main fan switching without stopping, one-key reversing and catastrophic ventilation control in mine ventilation system. For example, during the process of switching without stopping, the system needs to confirm that the auxiliary facilities of 1# fan have been closed in place and the auxiliary facilities of 2# fan have been opened in place. At this time, the differential pressure verification can be used to judge whether the facilities are in the expected state, so as to decide whether to start 2# fan.

[0052] Further, this step realizes real-time verification of the facility opening degree state by quantifying the differential pressure relationship, effectively avoids control failure caused by facilities not in place or abnormality, and improves the reliability and safety of system linkage. Further, this method provides data basis for subsequent execution feedback and abnormality processing, and enhances the intelligent level and emergency response ability of the entire ventilation system.

[0053] S3, control the fan auxiliary device to execute actions according to the preset process, and monitor the differential pressure change in the execution process in real time to verify the action in place.

[0054] Specifically, in some implementations, the control fan accessory device performs actions according to a preset procedure, and monitors the differential pressure change in real time to verify the action completion, which is achieved by integrating the control substation and sensor network to remotely control and feedback the state of the auxiliary facilities such as the main fan gate door, skylight, and explosion-proof door anti-wind locking device, so as to ensure that the auxiliary device can accurately respond and execute to the position under the conditions of switching, anti-wind, or disaster ventilation of the main fan.

[0055] Further, this step first relies on a preset control procedure, such as a non-stop fan reversing or disaster explosion-proof door opening procedure. After the control substation receives the adjustment instruction of the main fan, it sends an action instruction to each accessory device through PLC or DCS system to drive its transmission mechanism (such as electric push rod, pneumatic actuator, or rotary drive device) to complete the opening and closing or adjustment operation. During the action execution process, the system collects differential pressure data in real time through differential pressure sensors arranged at the front and rear ends of the accessory device, such as 、 、 、 、 、 , to verify whether the device completes the action to the position according to the instruction.

[0056] Further, the accuracy of the differential pressure monitoring should not be less than ±10Pa, and the sampling frequency is recommended to be set to 1Hz to 5Hz to ensure timely response to dynamic changes. At the same time, the system sets a differential pressure threshold range, such as , to determine whether the accessory device is in the expected state. When the differential pressure change trend does not match the preset model, the system will trigger the alarm mechanism.

[0057] Further, this step is widely used in the switching, anti-wind, and disaster ventilation control of the mine ventilation system. For example, during the non-stop fan reversing process, after the 1# fan is stopped, the 2# fan can start only after the 1# gate door is closed to the position and the 2# air door is opened to the position, and the differential pressure monitoring can effectively verify whether the air door state meets the switching conditions.

[0058] Further, this step realizes real-time verification of the execution state of the fan accessory device through the differential pressure feedback mechanism, improves the reliability and safety of the system linkage control, effectively prevents ventilation failure or air leakage problems caused by the device not being in place, and thus improves the disaster prevention and reduction ability of the mine.

[0059] Further, S3 includes: S31, the transmission mechanism performing action includes a push-pull transmission mechanism and a rotary transmission mechanism.

[0060] Specifically, in some implementations, the transmission mechanism performs actions including push-pull transmission mechanism and rotary transmission mechanism, which are based on the technical implementation principle of mechanical transmission and the cooperative control mechanism of the actuator to realize the precise opening and closing or angle adjustment of the fan accessory device. The push-pull transmission mechanism usually adopts a pneumatic or electric push rod structure, and realizes the opening and closing control of the gate or air window through linear motion. The stroke accuracy is generally required to be within ±2 mm, and the response time is not more than 3 seconds to meet the demand of rapid switching of working conditions. The rotary transmission mechanism is usually used for the rotary adjustment of butterfly valve or skylight, and is usually driven by a servo motor or a stepping motor, and realizes angle control through a gear or worm gear transmission system. The angle adjustment accuracy is usually ±1°, and the maximum rotation speed can reach 15° / s to ensure good dynamic response ability under complex ventilation conditions.

[0061] Further, the push-pull transmission mechanism drives the actuator by controlling the electric signal or pneumatic signal sent by the substation to make the gate or air door linearly displace along the guide rail or sliding groove. The action process needs to cooperate with the position sensor to realize real-time feedback of the opening degree state to ensure that the execution is in place. The rotary transmission mechanism realizes the rotary opening and closing of the butterfly valve or skylight by controlling the rotation angle and rotation speed of the motor. The control signal usually adopts PWM or CAN bus protocol to ensure high precision and low delay control effect. Both transmission methods need to meet the requirements of the action reliability and response time of ventilation facilities in the Coal Mine Safety Regulations, and meet the specifications of the performance of the actuator in GB / T14542-2017 General Technical Conditions for Ventilator Control Device.

[0062] Further, this step is executed by the cooperation of the push-pull and rotary transmission mechanisms, which can ensure that the accessory device can accurately act according to the preset process in the scenes of not stopping the wind, one-key reversing the wind, or disaster ventilation, so as to effectively control the airflow direction and air volume distribution of the mine ventilation system and improve the disaster prevention and reduction ability.

[0063] S32, when monitoring the pressure difference change in the execution process in real time, the formula Verify the linkage to the position of 2# fan during normal operation.

[0064] Specifically, in some implementations, the pressure difference change in the execution process is monitored in real time, and the formula Verify the linkage to the position of 2# fan during normal operation. This step realizes real-time judgment of the device action state and closed-loop feedback of the control process by collecting the air pressure difference data of the key nodes of the fan accessory device and combining the preset pressure difference relationship model.

[0065] Further, this step relies on the cooperation of high-precision pressure sensors and control sub-stations arranged at key positions such as air shafts, air doors, skylights, and butterfly valves. The pressure difference data collected by the sensors is uploaded to the control sub-station in real time through industrial Ethernet or wireless communication modules. The control sub-station determines the pressure difference mode it should be in according to the current main fan operating state (e.g., 1# fan shutdown, 2# fan startup), and compares the actual pressure difference value with the preset model. Specifically, represents the air pressure difference inside and outside the 2# skylight, represents the pressure difference before and after the 1# gate valve, represents the pressure difference inside and outside the air shaft explosion-proof door. When the 2# fan is running normally, if the above formula is true, that is, the pressure difference inside and outside the skylight is equal to the pressure difference before and after the 1# gate valve, and both are greater than the pressure difference of the explosion-proof door, it indicates that the fan accessories have completed the linkage action according to the preset process, and the system can continue to execute the subsequent control logic.

[0066] Further, the pressure difference values involved in this step need to meet certain threshold ranges. For example, The difference between should be less than 50 Pa, and both should be greater than 10 times the pressure difference of the explosion-proof door to ensure the accuracy of the linkage in place. In addition, the sensor sampling frequency is recommended to be no less than 1 Hz to ensure real-time and dynamic response capability.

[0067] Further, this step is widely used in the operation scenarios of main fan without stopping wind, one-key reverse wind, etc. in mine ventilation system. For example, during the process of 1# fan shutdown and 2# fan startup, the system verifies the formula to determine whether the 1# gate valve has been closed in place and the 2# skylight has been opened in place, thereby ensuring the correct switching of the ventilation path and preventing ventilation failure or air leakage due to device not in place.

[0068] Further, this step realizes accurate judgment of the linkage state of fan accessories by quantifying the pressure difference relationship, improving the reliability and safety of system control. Its innovation lies in using pressure difference as the basis for judging linkage in place, replacing the traditional single method of relying on position feedback, enhancing the robustness and fault tolerance of the system under complex working conditions.

[0069] S4, feedback the action execution result and abnormal state to the upper computer, trigger alarm, process interruption or prompt specific fault reason according to abnormal type.

[0070] Specifically, in some implementations, the step "feedback the action execution result and abnormal state to the upper computer, trigger the alarm, process interruption or prompt the specific fault reason according to the abnormal type" is the key feedback and response mechanism in the ground main fan auxiliary device linkage control method. Through the data communication between the control substation and the upper computer, this step realizes real-time monitoring and abnormal handling of the execution state of the fan auxiliary device, thereby ensuring the safe and stable operation of the entire ventilation system under switching, reverse wind or catastrophic working conditions.

[0071] Further, after receiving the control instruction, the fan auxiliary device executes the corresponding action through the transmission mechanism, and collects the online state, opening degree information and pressure difference data between the two ends of the device through the sensor collection equipment. These data are uploaded to the control substation in real time through the industrial communication protocol, and then the processed execution result and abnormal state information are fed back to the upper computer system by the substation. The upper computer system judges the state based on the preset pressure difference quantization relationship model, and identifies whether the switching or reverse wind condition is met.

[0072] Further, this step is widely used in the process of switching without stopping the fan, one-key reverse wind and catastrophic ventilation control of the mine ventilation system. For example, in the switching process of stopping 1# fan and starting 2# fan, if a certain air door cannot be fully opened according to the instruction, the system will immediately feedback the abnormality and prompt "1# air door is stuck, manual inspection is required", and at the same time, the subsequent process is interrupted to prevent ventilation interruption or reverse wind failure caused by equipment failure.

[0073] Further, the technical effect of this step is that through the real-time feedback and intelligent response mechanism, the identification ability and processing efficiency of the system for abnormal working conditions are effectively improved, the frequency of manual intervention is reduced, and the automation level and safety of the mine ventilation system are enhanced.

[0074] Further, S4 comprises: S41, when detecting that the device is offline, outputting prompt information and interrupting the linkage control process.

[0075] Specifically, in some implementations, when detecting that the device is offline, the system will output prompt information and interrupt the linkage control process, and this step is used to ensure the safety and reliability of the control system. The technical implementation principle is based on real-time monitoring of the device online state and conditional judgment logic of the control process.

[0076] Further, the detection of the online state of the device is usually completed through the communication link between the control substation and the device. The control substation uses standard industrial communication protocols such as industrial Ethernet, CAN bus or RS485, periodically sends heartbeat signals or state query instructions to the fan accessories (such as remote butterfly valve, remote air window, remote vertical gate and explosion-proof door locking mechanism). If the response signal of the device is not received within the preset time (such as 3 seconds), it is determined that the device is in the offline state. At this time, the system will trigger the abnormal processing module, and output prompt information through the upper computer or local control interface, for example, “1# air door communication interruption, unable to continue to execute the machine reverse process”.

[0077] Further, the determination of the online state of the device depends on the response timeout threshold, the number of retries and the signal strength of the communication protocol. For example, in the ModbusRTU protocol, the communication timeout time can be set to 3000ms, the number of retries is 3 times, and if the response is not received for three attempts, it is confirmed that the device is offline. In addition, the system can also cross-verify with the opening feedback signal of the device to improve the accuracy of the judgment.

[0078] Further, this step is widely used in mine ventilation systems, especially when performing non-stop wind machine reversal, one-key reverse wind and other operations. For example, during the process of switching 1# fan to 2# fan, if 1# air door is offline, the system will immediately stop the machine reverse process, to prevent the air door from not being closed or not being opened due to device disconnection, thereby causing underground ventilation abnormalities or safety hazards.

[0079] Further, this step effectively improves the fault tolerance and safety of the linkage control system. By detecting the online state of the device in real time and stopping the abnormal process in time, the system can avoid misoperation caused by device failure or communication interruption, and ensure the stability of the air volume and the safety of the system during the main fan switching process. At the same time, this mechanism provides clear prompt information for subsequent fault diagnosis and maintenance, improving the maintainability and operation efficiency of the system.

[0080] S42, when detecting that the opening of the device does not meet the requirements, prompting that the device is stuck or the sensor position is abnormal, and recording the fault code.

[0081] Specifically, in some implementations, when the opening of the device is detected to not meet the preset control requirements, the system will trigger the abnormal prompt mechanism and record the corresponding fault code to realize real-time monitoring and fault diagnosis of the state of the fan accessories. This step is based on the comprehensive analysis of the online state detection and opening feedback data of the device, and its technical implementation principle involves sensor signal acquisition, control substation logic judgment and upper computer fault recording mechanism.

[0082] Further, the control substation collects the current opening value of the equipment in real time through the angle or displacement sensor installed on the fan accessory device (such as remote control butterfly valve, remote control air window, remote vertical gate, etc.), and compares it with the preset target opening value. If the deviation between the actual opening value and the target value exceeds the set threshold (such as ±5° or ±10% stroke), it is determined that the opening is abnormal. At this time, the control substation will determine that the abnormality may be caused by factors such as equipment jamming, transmission mechanism failure or sensor position offset according to the preset fault diagnosis logic, and send an abnormal prompt information to the upper computer through the communication interface, while recording the corresponding fault code (such as "E003: gate jamming" or "E005: sensor position abnormality").

[0083] Further, the detection accuracy of the equipment opening is usually required to be within ±1° to ensure the regulation accuracy of the control system. The sensor sampling frequency is recommended to be no less than 10Hz to meet the real-time requirement. The coding rules of the fault code should comply with GB / T28927-2012 "Industrial automation systems and integration - Device fault code coding specification" or the equipment state coding standard of the enterprise, to ensure the traceability and standardization of the fault information.

[0084] Further, this step is widely used in the key operation processes such as one-key reverse wind and machine reversing without stopping wind of the mine ventilation system. For example, in the machine reversing without stopping wind process, if the 1# gate valve cannot be completely closed, the system will prompt "equipment jamming" and record the fault code, to prevent the ventilation system from failing due to the equipment not being in place, thereby ensuring the safety of underground operation.

[0085] Further, by feeding back the equipment execution state in real time, the reliability and safety of the linkage control system are improved. Combined with the differential pressure model described in the technical disclosure (such as 、 , etc.), the system can further verify whether the equipment action is in place, thereby realizing closed-loop control and fault self-diagnosis function, and improving the intelligent level of the mine ventilation system.

[0086] The ground main fan accessory device linkage control method of the embodiment of the application realizes the automatic linkage control and state feedback of the ground main fan accessory device, and improves the regulation accuracy and emergency response capability of the mine ventilation system.

[0087] Embodiment 2 In order to improve the need for linkage control of the fan accessory device during the working condition regulation process of the ground main fan, the application provides another ground main fan accessory device linkage control method, as shown in FIG. 2, which comprises the following steps: Figure 2 ​After receiving the adjustment demand of the ground main ventilator, the preset ventilator accessory adjustment process is carried out, for example, the ventilator accessory is not stopped. The ventilator accessory completes self-checking to ensure that the ventilator accessory can meet the adjustment demand of the ground main ventilator. The ventilator accessory completes the action according to the preset process. The action result is fed back, including ventilator accessory self-checking, problem cause and countermeasures.

[0088] Further, the ventilator accessory includes a remote control butterfly valve, a remote control air window, a remote control vertical gate and a blast door locking mechanism, and the installation positions are as shown in the accompanying drawings. Figure 5 The ventilator accessory adjustment process includes a one-key machine switching process, a non-stop wind machine switching process and a disaster blast door opening process. The one-key machine switching preset adjustment process includes that under the condition that 1# machine switching 2# one-key pneumatic conditions are met, 1# machine switching 2# one-key pneumatic, 1# ventilator is stopped, after 30s delay, 1# air door is closed and 2# air door is opened, 2# air door is closed to the position signal output, and 2# ventilator is started, as shown in the accompanying drawings. Figure 3

[0089] Further, the non-stop wind machine switching preset process includes that when 1# ventilator is normally operated, 1# horizontal air door is closed, 1# gate air door is opened, 2# horizontal air door is opened, and 2# gate air door is opened; after 2# ventilator is started, 1# horizontal air door is opened, 1# gate air door is closed, and 2# horizontal air door is closed; after 1# gate air door is closed to the position, 1# horizontal air door is opened to the position and 2# horizontal air door is closed to the position, 1# ventilator is closed, as shown in the accompanying drawings. The disaster blast door opening preset process includes that 1# ventilator is closed, 1# gate air door is closed, 2# gate air door is closed, and the blast door is opened. Figure 4

[0090] In an embodiment of the present application, the ventilator accessory self-checking includes the following steps: the ventilator accessory self-checking content includes the facility online state, the facility opening degree detection and the facility two-end pressure difference detection. The equipment online state self-checking refers to determining whether the equipment is online by using the substation, the equipment opening degree detection refers to determining the final position or angle of the equipment device by using the substation and the sensor, and the facility two-end pressure difference detection refers to determining the atmospheric pressure difference between the two ends of the facility by using the substation and the sensor. The quantitative relationship between the ventilator accessory two-end pressure difference and the ventilator accessory state is as follows: 1) The preliminary quantitative relationship model between the ventilator accessory air pressure difference during the normal operation of 1# ventilator and the reverse wind period is as follows:

[0091] 2) The preliminary quantitative relationship model between the ventilator accessory air pressure difference during the normal operation of 2# ventilator and the reverse wind period is as follows: ​​​​​​​​ 、 、 、 .

[0092] 3) Preliminary quantitative relationship model between the air pressure difference of the fan auxiliary device during the explosion door opening period of the catastrophe period: 、 、 、 、 .

[0093] In the formula: is the air pressure difference inside and outside the explosion door of the air shaft, Pa; 、 are the pressure differences before and after the remotely controlled gate valve, Pa, respectively; 、 are the air pressure differences inside and outside the remotely controlled skylight, Pa, respectively; 、 are the air pressure differences before and after the remotely controlled butterfly valve, Pa.

[0094] When the ground main fan is switched from 1# fan to 2# fan, the pressure difference relationship of the fan auxiliary device should finally change from 1) mode to 2) mode; when the ground main fan is switched from 2# fan to 1# fan, the pressure difference relationship of the fan auxiliary device should finally change from 2) mode to 1) mode; when a disaster occurs underground and the ground main fan loses power, the explosion door of the air shaft is opened and relies on natural ventilation, the pressure difference relationship of the fan auxiliary device should finally change from 1) mode or 2) mode to 3) mode.

[0095] In an embodiment of the present application, the fan auxiliary device action execution includes the fan auxiliary device executing actions under the instruction of the control substation, and feeding back the action results to the control substation and the upper computer process. The action results include the online state of the fan auxiliary device and the opening degree. The stage characteristics are not limited to the fan auxiliary device relying on push-pull or rotary transmission execution, and only require feedback results at least the online state of the device and the opening degree of the facility.

[0096] In an embodiment of the present application, the execution result feedback includes: the fan auxiliary device self-checking and the fan auxiliary facility self-checking content are basically the same; the fan auxiliary device problem reason and coping method are to remind, alarm and action stop for the fan auxiliary device not executing actions or not executing actions in place. For example, if the fan auxiliary device drops during the execution of the instruction, it will prompt that the certain device is not online and cannot continue to execute the instruction, and the fan auxiliary device linkage control process is stopped; the fan auxiliary device fails to execute the instruction to the place, which will prompt that the opening degree of the certain device does not meet the requirements, the device may be stuck or the sensor position is abnormal, and further verification is required.

[0097] The embodiment of the present application also has the following technical effects: the present application can adjust the linkage control between the fan accessory device according to the ground main fan working condition, and feedback the execution effect. In view of the feedback of the execution effect of the linkage control of the ground main fan accessory device, a model of the facility differential pressure of the fan accessory linkage device and the working condition of the main fan is established, and whether the fan accessory device has adjustment conditions and whether the execution is in place is judged by analyzing the size relationship between the facility differential pressures of the fan accessory device.

[0098] Embodiment 3 In order to realize the above-mentioned embodiments, as shown in the accompanying drawings, Figure 6 The embodiment also provides a ground main fan accessory facility linkage control device 10, which comprises: A linkage process starting module 100 is configured to receive the ground main fan working condition adjustment demand and start a preset fan accessory device linkage process. A linkage condition verification module 200 is configured to perform online state detection, opening degree detection and facility differential pressure detection on the fan accessory device based on the control substation, and verify whether the device meets the linkage condition. An execution monitoring module 300 is configured to control the fan accessory device to perform actions according to the preset process, and monitor the differential pressure change in the execution process in real time to verify the action in place. An abnormal feedback processing module 400 is configured to feed back the action execution result and abnormal state to the upper computer, and trigger an alarm, process interruption or prompt the specific fault reason according to the abnormal type.

[0099] Further, the linkage process starting module 100 is also configured to: control the 1# horizontal air door to be closed, the 1# gate air door to be opened, the 2# horizontal air door to be opened and the 2# gate air door to be opened when the 1# fan is normally running, control the 1# horizontal air door to be opened, the 1# gate air door to be closed and the 2# horizontal air door to be closed after the 2# fan is started, and close the 1# fan after the 1# gate air door is closed in place, the 1# horizontal air door is opened in place and the 2# horizontal air door is closed in place.

[0100] Further, the linkage condition verification module 200 is also configured to: detect the online state of the equipment through the control substation, and specifically verify the online state by using the communication protocol of the substation and the equipment; collect the differential pressure data of the equipment through the sensor, and verify whether the opening degree of the equipment meets the linkage condition through the formula .

[0101] The ground main fan accessory facility linkage control device of the embodiment of the present application realizes the automatic linkage control and execution state verification of the ground main fan accessory device, and improves the response speed and reliability of the mine ventilation system under the condition of equipment switching and disaster.

[0102] Embodiment 4 To achieve the method of the above-mentioned embodiments, the application further provides a computer device, which comprises a memory and a processor, wherein the processor runs a program corresponding to executable program codes stored in the memory by reading the executable program codes, so as to realize each step of the ground main ventilator auxiliary facility linkage control method. Figure 7 As shown in the figure, the computer device 600 comprises a memory 601 and a processor 602; wherein the processor 602 runs a program corresponding to executable program codes stored in the memory 601 by reading the executable program codes, so as to realize each step of the ground main ventilator auxiliary facility linkage control method.

[0103] Embodiment 5 To achieve the above-mentioned embodiments, the application further provides a non-transitory computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the ground main ventilator auxiliary facility linkage control method as described in the above-mentioned embodiments.

[0104] In the description of the present specification, the description of the terms “one embodiment”, “some embodiments”, “an example”, “a specific example”, or “some examples” and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0105] In addition, the terms “first”, “second” are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first”, “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “a plurality of” is at least two, for example, two, three, etc., unless otherwise specifically limited.

Claims

1. A method for linkage control of auxiliary facilities of a ground main ventilation fan, characterized in that, include: S1 receives the ground main ventilation fan's operating condition adjustment request and initiates the preset fan auxiliary device linkage process; S2, based on the control substation, performs online status detection, opening detection and differential pressure detection of the wind turbine auxiliary devices to verify whether the devices meet the linkage conditions; S3 controls the auxiliary devices of the fan to perform actions according to the preset process, and monitors the pressure difference changes in real time during the execution process to verify the effectiveness of the actions; S4 feeds back the action execution results and abnormal status to the host computer, triggering alarms, process suspension, or prompting specific fault causes based on the type of abnormality.

2. The method as described in claim 1, characterized in that, S1 includes: S11, the preset linkage process includes a non-stop airflow reversal process, the specific steps of which are as follows: when fan #1 is running normally, horizontal damper #1 is closed, gate damper #1 is open, horizontal damper #2 is open, and gate damper #2 is open; after fan #2 starts, horizontal damper #1 is open, gate damper #1 is closed, and horizontal damper #2 is closed; after gate damper #1 is closed, horizontal damper #1 is opened, and horizontal damper #2 is closed, fan #1 is shut down.

3. The method as described in claim 1, characterized in that, S2 includes: S21, the online status of the control substation detection equipment is verified by using the communication protocol between the substation and the equipment; S22, uses sensors to collect pressure difference data across the facility, and then uses the formula... Verify whether the facility opening degree meets the linkage conditions.

4. The method as described in claim 1, characterized in that, The S3 includes: S31, the transmission mechanism performs actions including push-pull transmission mechanism and rotary transmission mechanism; S32, when monitoring the pressure difference changes during the execution process in real time, the formula is used. Verify the interlocking functionality of wind turbine #2 during normal operation.

5. The method as described in claim 1, characterized in that, The S4 includes: S41, when a device is detected to be offline, output a prompt message and stop the linkage control process; S42: When the device opening degree is not in compliance with the requirements, it will indicate that the device is stuck or the sensor position is abnormal, and record the fault code.

6. A ground main ventilation fan auxiliary facility linkage control device, characterized in that, include: The linkage process initiation module is used to receive the ground main ventilation fan's operating condition adjustment requirements and initiate the preset linkage process of the fan auxiliary devices; The linkage condition verification module is used to perform online status detection, opening detection and differential pressure detection at both ends of the facility on the auxiliary equipment of the wind turbine based on the control substation, and to verify whether the equipment meets the linkage conditions. The execution monitoring module is used to control the auxiliary devices of the wind turbine to perform actions according to a preset procedure, and to monitor the pressure difference changes in real time during the execution process to verify the effectiveness of the actions; The exception feedback processing module is used to feed back the action execution results and exception status to the host computer, and trigger alarms, process suspension or prompt specific fault reasons according to the exception type.

7. The apparatus as claimed in claim 6, characterized in that, The linkage process initiation module is also used for: When fan #1 is running normally, control the #1 horizontal damper to be closed, the #1 gate damper to be open, the #2 horizontal damper to be open, and the #2 gate damper to be open. After fan #2 starts, control the #1 horizontal damper to be open, the #1 gate damper to be closed, and the #2 horizontal damper to be closed. After the #1 gate damper is closed, the #1 horizontal damper is open, and the #2 horizontal damper is closed, shut down fan #1.

8. The apparatus as claimed in claim 6, characterized in that, The linkage condition verification module is also used for: The online status of the monitoring equipment at the control substation is verified by specifically using the communication protocol between the substation and the equipment. The pressure difference data at both ends of the facility is collected using sensors, and then processed using formulas. Verify whether the facility opening degree meets the linkage conditions.

9. A computer device, characterized in that, Including processor and memory; The processor reads executable program code stored in the memory to run a program corresponding to the executable program code, so as to implement the ground main ventilation fan auxiliary facility linkage control method as described in any one of claims 1-5.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements a ground main ventilation fan auxiliary facility linkage control method as described in any one of claims 1-5.

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